The U.S. Food and Drug Administration has put a Nashville compounding pharmacy on notice to correct multiple safety hazards in a warning letter issued this month to its owner, John W. Hollis.

The letter comes after the FDA last spring cited John Hollis Pharmacy on 11 rule violations, ranging from failing to maintain sterility safeguards to compounding drugs without having legally required individually identified patients. The FDA acknowledged that Hollis had agreed to recall drug products and verbally stated in May that he would cease sterile compounding.

However, the pharmacy continues to fill and compound prescriptions that do not require sterility measures.